Only update JoystickButtons every nth loop

[Kython89]

According to Omar at CTRE each api call to a joystick can take ~0.3ms. With the hope of running at 100hz this can be problematic given everything else that is going on.

It would be relatively easy to cache the value of the JoystickButtons and only update the cache every nth loop. The buttons would be staggered to avoid everything nth loop being slower.

[Kython89]

Using a wrapper like this around all our buttons should work.

class JoystickButton2481 {
private:
    class Button* m_button;
    static int s_buttonCount;
    int m_loopCounter;
    bool m_cachedState;

public:
    JoystickButton2481(Button* button) {
        m_button = button;
        m_loopCounter = s_buttonCount++ % 5; //Offset the loop counter by 1 to 5 so not all the buttons update on the loop.
        m_cachedState = false;
    }

    bool Get() {
        if (m_loopCounter++ % 5 == 0) {
            m_cachedState = m_button->Get();
        }
        return m_cachedState;
    }
};